Here it is next to a regular 7 1/4" saw.

[Linked Image]

[Linked Image]

The diamond shaped arbor is the issue. I think I found one that will work. A guy in the comments says it has the option to knock out the center for a diamond arbor and should work for my saw.

https://www.amazon.com/Tools-MARATHON-Carbide-Circular-14233/dp/B0002KIEZ6

Quote
I own two old big wormdrive Skilsaws, a model 107 ten inch blade and a model 127, twelve inch blade. Like their modern descendants, the model 77 variants, they use a diamond shape arbor. It's really difficult to find that type blade in either size, especially with carbide teeth. It's not mentioned or shown in the Amazon description, but this Irwin 14233 is perfect for my model 107, 10" Skilsaw. Also, the Irwin 14070, 14074 and 14076 10" blades have the diamond center option. I'll still have to mill a diamond center into a 12" blade for my Skilsaw model 127, but the Irwin 14080 12" blade is a good starting point.


How dose that work as I've never done it before? I assume it is perforated like an electrical outlet box?